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In Smart TV Live Multicast systems, packet loss is one critical factor that causes OoS(Quality of Service) decreases, OPRSFEC (Optimized Reed-Solomon Forward Error Correction) provides an end-to-end method of packet loss recovery in the application layer which can recover lost packets completely (when the loss rate is less than 5%) with few computational resources and very little impact on users???...
In this paper a new energy-efficient error control mechanism based on Redundant Residue Number System (RRNS) is proposed for Wireless Sensor Networks (WSNs). In general, WSNs suffer from burst errors due to their inherent nature. An error detection and correction approach has been developed to handle burst errors more efficiently. Residue encoders transform the sensed data to small-sized and independent...
Multilevel coded modulation combined with a phase-noise-optimized 16QAM constellation is proposed to decrease required SNR by several dB. The set partitioning method is presented and constituent code rates are found to minimize block error rate.
A low complexity hybrid polar low-density parity check (LDPC) coded modulation (CM) scheme is introduced for a single-wavelength fiber-optical channel. In the proposed scheme, we exploit a low complexity probabilistic shaping together with a four-dimensional (4D) mapping to reduce the complexity of a 4D non-binary LDPC CM scheme for fiber-optic channels. The proposed scheme has a flexible structure...
Due to the best effort feature of many existing transmission channels, video streams often suffer from inevitable transmission errors. In this paper, we propose a scheme of robust video transmission based on the state-of-the-art Raptor codes, whose applications are in full swing now. And considering Region of Interest (ROI) often draws much attention in images, the scheme adopts a nested protection...
We present an adaptive unequal error protection (UEP) strategy built on the 1-D interleaved parity Application Layer Forward Error Correction (AL-FEC) code for protecting the transmission of stereoscopic 3D video content encoded with Multiview Video Coding (MVC) through IP-based networks. Our scheme targets the minimization of quality degradation produced by packet losses during video transmission...
Channel variability and a high level of noise lead to a significant probability of packet loss in many underwater networks. Techniques based on packet-level Forward Error Correction (FEC), such as Reed Solomon (RS) codes, can be used to offer effective protection against excessive packet losses that would be generated by noise. In this paper, we propose a new error recovery scheme based on RS codes...
DVB standards are affected by two major developments over the last years: the convergence to IP networks, and the increasing proliferation of mobile devices. This has led to the adoption of more efficient IP encapsulation protocols such as the Generic Stream Encapsulation (GSE) on one hand, and the specification of solutions targeted for mobile channels on the other hand. One such set of solutions...
We present real-time experimental results using high-overhead, high-gain FEC to overcome impairments caused by XPM in dispersion-compensated metro/regional WDM networks that combine 10G OOK and 40G DP-QPSK channels.
Distributed storage is a scheme to store data in networked storage services, which is the basis of popular cloud storage solutions. Although this scheme has huge benefits in reducing maintenance and operation cost, it has several security concerns. Among them, malicious file deletion by the storage providers is a top concern. In this paper, we develop a novel error-tolerant solution, ET-DME, to effectively...
This work reports an image encoding scheme that distributes low-density parity-check (LDPC) encoding over a prime field of order q, GF(q), on a wireless sensor network (WSN). In the scheme, we divide the input data into several small parts, which are then distributed to multiple nodes to perform a LDPC encoding task in a cluster. We conducted extensive computational simulations to verify our method...
Scalable Video Coding (SVC) enables the partition of video data into layers of different priorities for adapting to both the diversities of terminal capabilities and the variation of network transmission mediums. It is more desirable that more important video data can be recovered with higher probabilities. In this paper, we propose a lightweight inter-layer protection scheme for SVC transmission,...
PDM-QPSK and PDM-BPSK are compared against PS-QPSK and PQ-16PPM with equal bandwidth expansion factors. The results show that better sensitivity is achieved by using strong FEC codes on standard modulation formats rather than using high-sensitivity modulation formats.
In this paper we address the issues of timeliness and transmission reliability of existing industrial communication standards. We combine a Forward Error Correction coding scheme on the Medium Access Control layer with a lightweight routing protocol to form an IEEE 802.15.4-conformable solution, which can be implemented into already existing hardware without violating the standard. After laying the...
Aiming at poor channel reliability and topology dynamic variation in the wireless sensor network transmission. Based on the existing error correction algorithm, a new improved error control mechanism is proposed in this paper based on network coding, and the simulation experiment also shows its feasibility.
Remote Data Checking (RDC) allows clients to efficiently check the integrity of data stored at untrusted servers. This allows data owners to assess the risk of outsourcing data in the cloud, making RDC a valuable tool for data auditing. A robust RDC scheme incorporates mechanisms to mitigate arbitrary amounts of data corruption. In particular, protection against small corruptions (i.e., bytes or even...
This paper presents the implementation of a single FPGA intellectual property (IP) core for channel coding and interleaving used in Digital Video Broadcasting, second generation (DVB-T2). DVB-T2 is the extension of the television standard DVB-T, issued by the consortium DVB, and is devised for the broadcast transmission of digital terrestrial television. The higher offered bit rate, with respect to...
Multiple Description Coding (MDC) and Peer-to-Peer transmission protocols prove to be extremely effective in the transmission of multimedia contents for both their robustness and flexibility. As a matter of fact, they permit building efficient architectures for the transmission of three-dimensional video signals. The paper presents an MDC strategy for the transmission of 3D video signals consisting...
Noise and interference make a substantial impact on wireless transmissions in industrial environments, resulting in frequent erroneous packet deliveries. Existing industrial communication standards adopt the IEEE 802.15.4 specification, which provides no means to correct the detected errors. We propose an IEEE 802.15.4-compliant Forward Error Correction-based approach that can be easily retrofitted...
This paper describes the main features of the DVB-NGH Bit-Interleaved Coded Modulation (BICM) module. This latter is derived from a sub-set of DVB-T2 BICM components with additional features intended to first lower receiver complexity and power consumption and then to increase receiver robustness over mobile reception. Therefore, the long code block size was removed, a different range of coding rates...
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